mbox series

[SRU,Unstable/OEM-5.14,0/1] Let VMD follow host bridge PCIe settings

Message ID 20211213020750.155279-1-kai.heng.feng@canonical.com
Headers show
Series Let VMD follow host bridge PCIe settings | expand

Message

Kai-Heng Feng Dec. 13, 2021, 2:07 a.m. UTC 
BugLink: https://bugs.launchpad.net/bugs/1954611

[Impact]
Some platforms have endless AER message floods kernel log, slows done
disk I/O.

[Fix]
Honor BIOS settings to disable AER for Intel VMD.

[Test]
Use dmesg to check kernel log, no more AER message since AER is
disabled.

[Where problem could occur]
The patch copies PCIe settings from host bridge, so some PCIe features
will be disabled as a result. This may not be desirable for some users.

Kai-Heng Feng (1):
  PCI: vmd: Honor ACPI _OSC on PCIe features

 drivers/pci/controller/vmd.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

Comments

Timo Aaltonen Dec. 13, 2021, 12:31 p.m. UTC | #1 
On 13.12.2021 4.07, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1954611
> 
> [Impact]
> Some platforms have endless AER message floods kernel log, slows done
> disk I/O.
> 
> [Fix]
> Honor BIOS settings to disable AER for Intel VMD.
> 
> [Test]
> Use dmesg to check kernel log, no more AER message since AER is
> disabled.
> 
> [Where problem could occur]
> The patch copies PCIe settings from host bridge, so some PCIe features
> will be disabled as a result. This may not be desirable for some users.
> 
> Kai-Heng Feng (1):
>    PCI: vmd: Honor ACPI _OSC on PCIe features
> 
>   drivers/pci/controller/vmd.c | 18 ++++++++++++++++++
>   1 file changed, 18 insertions(+)
> 

applied to oem-5.14, thanks
Paolo Pisati Dec. 15, 2021, 9:54 a.m. UTC | #2 
On Mon, Dec 13, 2021 at 10:07:49AM +0800, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1954611

This sounds like stable material: once your patch enter upstream, please push it
down through stable and we'll pick it from there.